问题

It will be at least 10 days _______they finish cleaning up the typhoon-stricken village.

A

until

B

before

C

since

D

when

答案解析

本题考查连词

B选项,句意为“他们需要至少10天才能清理完受台风袭击的村庄”。before“在……之前”,符合题意。综上,B选项正确。

A选项,until“直到”,常与not连用构成“直到……才”,故排除。

C选项,since“自从”,故排除。

D选项,when“当……时候”,故排除。

故正确答案为B项。

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